From patchwork Thu Nov 30 20:40:39 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Luck X-Patchwork-Id: 10085631 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id BAC5C60586 for ; Thu, 30 Nov 2017 20:40:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ADDAA2A062 for ; Thu, 30 Nov 2017 20:40:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A2AA72A2FD; Thu, 30 Nov 2017 20:40:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B602E2A2FF for ; Thu, 30 Nov 2017 20:40:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751607AbdK3Uko (ORCPT ); Thu, 30 Nov 2017 15:40:44 -0500 Received: from mga11.intel.com ([192.55.52.93]:10155 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751105AbdK3Ukn (ORCPT ); Thu, 30 Nov 2017 15:40:43 -0500 Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Nov 2017 12:40:42 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.45,343,1508828400"; d="scan'208";a="8097655" Received: from agluck-desk.sc.intel.com ([10.3.52.160]) by fmsmga004.fm.intel.com with ESMTP; 30 Nov 2017 12:40:42 -0800 From: Tony Luck To: linux-edac@vger.kernel.org Cc: Tony Luck , Borislav Petkov , Dan Williams , Jean Delvare , Len Brown , linux-acpi@vger.kernel.org, linux-nvdimm@lists.01.org, Lv Zheng , Mauro Carvalho Chehab , "Rafael J. Wysocki" , Qiuxu Zhuo , Aristeu Rozanski Subject: [RFC PATCH 1/4] acpi, nfit: Add function to look up nvdimm device and provide SMBIOS handle Date: Thu, 30 Nov 2017 12:40:39 -0800 Message-Id: <9aa0f36505fd1ca53444360d8eee239a5e890b6f.1512070562.git.tony.luck@intel.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP EDAC driver needs to look up attributes of NVDIMMs provided in SMBIOS. Provide a function that looks up an acpi_nfit_memory_map from a device handle (node/socket/mc/channel/dimm) and returns the SMBIOS handle. Also pass back the "flags" so we can see if the NVDIMM is OK. Signed-off-by: Tony Luck --- drivers/acpi/nfit/core.c | 27 +++++++++++++++++++++++++++ include/acpi/nfit.h | 19 +++++++++++++++++++ 2 files changed, 46 insertions(+) create mode 100644 include/acpi/nfit.h diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 9c2c49b6a240..31c0dc30f88f 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -23,6 +23,7 @@ #include #include #include +#include #include "nfit.h" /* @@ -478,6 +479,32 @@ static bool add_memdev(struct acpi_nfit_desc *acpi_desc, return true; } +int nfit_get_smbios_id(u32 device_handle, u16 *flags) +{ + struct acpi_nfit_memory_map *memdev; + struct acpi_nfit_desc *acpi_desc; + struct nfit_mem *nfit_mem; + + mutex_lock(&acpi_desc_lock); + list_for_each_entry(acpi_desc, &acpi_descs, list) { + mutex_lock(&acpi_desc->init_mutex); + list_for_each_entry(nfit_mem, &acpi_desc->dimms, list) { + memdev = __to_nfit_memdev(nfit_mem); + if (memdev->device_handle == device_handle) { + mutex_unlock(&acpi_desc->init_mutex); + mutex_unlock(&acpi_desc_lock); + *flags = memdev->flags; + return memdev->physical_id; + } + } + mutex_unlock(&acpi_desc->init_mutex); + } + mutex_unlock(&acpi_desc_lock); + + return -ENODEV; +} +EXPORT_SYMBOL_GPL(nfit_get_smbios_id); + /* * An implementation may provide a truncated control region if no block windows * are defined. diff --git a/include/acpi/nfit.h b/include/acpi/nfit.h new file mode 100644 index 000000000000..1eee1e32e72e --- /dev/null +++ b/include/acpi/nfit.h @@ -0,0 +1,19 @@ +/* + * Copyright(c) 2017 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#ifndef __ACPI_NFIT_H +#define __ACPI_NFIT_H + +int nfit_get_smbios_id(u32 device_handle, u16 *flags); + +#endif /* __ACPI_NFIT_H */